Tap “When connected on Wi-Fi,” uncheck all the options and then tap "OK."

angle-right

By default, WhatsApp does not automatically download media on roaming. So you can leave that “When roaming” option intact. In case, if you have already selected any of those, just uncheck them and tap "OK."

angle-right

That's it. All done. Just make sure that "No media" is below all the three options (see below screenshot).

From now on, WhatsApp will not auto download media on your Android device.

So, when you are receiving media files, you have to download manually. Tap the "Download" icon in the media file, and it will be downloaded and saved to your device.

Here are two important things to note:

​WhatsApp will always automatically download voice messages, and there is no option to stop that.

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You cannot stop auto-download on WhatsApp Web.

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